Payback Period and Accounting Rate of Return: Equal Annual Operating Cash Flows with Disinvestment Roopali is considering an investment proposal with the following cash flows: Initial investment-depreciable assets $28,000 Initial investment-working capital 4,000 Net cash inflows from operations (per year for 8 years) 8,000 Disinvestment-depreciable assets 4,000 Disinvestment-working capital 2,000 For parts b. and c., round answers to three decimal places, if applicable. a. Determine the payback period. Answer years b. Determine the accounting rate of return on initial investment Answer c. Determine the accounting rate of return on average investment